The main purpose of communication activity is not only to describe events, but also to evaluate them emotionally or expressively. This article describes emotional evaluation, expressiveness and emotionality (emotivity) in relation to the vocabulary of the Russian language. The author suggests criteria for identifying this type of impact and analyses it in detail. The results of the presented Emotional-evaluative dictionary EMOS can be taken into account in lexicographical description and in automatic translation, as well as in teaching Russian as a foreign language.